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62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/*
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* IScreenHandler.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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VCMI_LIB_NAMESPACE_BEGIN
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class Point;
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class Rect;
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VCMI_LIB_NAMESPACE_END
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class Canvas;
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class IScreenHandler
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{
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public:
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virtual ~IScreenHandler() = default;
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/// Updates window state after fullscreen state has been changed in settings
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virtual void onScreenResize() = 0;
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/// Fills screen with black color, erasing any existing content
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virtual void clearScreen() = 0;
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/// Returns canvas that can be used to display objects on screen
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virtual Canvas getScreenCanvas() const = 0;
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/// Synchronizes internal screen texture. Screen canvas may not be modified during this call
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virtual void updateScreenTexture() = 0;
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/// Presents screen texture on the screen
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virtual void presentScreenTexture() = 0;
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/// Returns list of resolutions supported by current screen
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virtual std::vector<Point> getSupportedResolutions() const = 0;
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/// Returns <min, max> range of possible values for screen scaling percentage
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virtual std::tuple<int, int> getSupportedScalingRange() const = 0;
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/// Converts provided rect from logical coordinates into coordinates within window, accounting for scaling and viewport
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virtual Rect convertLogicalPointsToWindow(const Rect & input) const = 0;
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/// Dimensions of render output
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virtual Point getRenderResolution() const = 0;
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/// Dimensions of logical output. Can be different if scaling is used
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virtual Point getLogicalResolution() const = 0;
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virtual int getInterfaceScalingPercentage() const = 0;
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virtual int getScalingFactor() const = 0;
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/// Window has focus
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virtual bool hasFocus() = 0;
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};
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